Mold for casting brake blocks and the like



W. E. WILLIAMS MOLD FOR CASTING BRAKE BLOCKS AND THE LIKE Filed Jan. 24.

1922 5 Sheets-Sheet 1 WILUPIM EWnuAmg Uct. 9, 1923, 1,470,307

w. E. WELLIAMS MOLD FOR CASTING BRAKE BLOCKS AND THE LIKE Filed Jan. 24, 1922 5 Sheets-Sheet 2 W. E. WllLLlAMS MOLD FOR CASTING BRAKE BLOCKS AND THE LIKE Filed Jan. 24, 1922 5 Sheets-Sheet 5 I f/fi/T' A a 1 a 3 6 fi m d AM. l l L14 7 m X z W A. n r f H AS a 2/0. 3/ w 5 I m it i i fl 6 00 L U i (A Y I I- D WV f 1b.. .l.

//VVE/v we: 7 WILLIAM E. \A/ILLIAMS by W. E. WILLiAMS MOLD FOR CASTING BRAKE BLOCKS AND THE LIKE 5 Sheets-Sheet 4 5 S W N k V/ M 1 E. M. 4 u M Filed Jan. 24

Get. 9,, 1923. I V 1,470,307

' w. E. WILLIAMS MOLD FOR CASTING BRAKE BLOCKS AND THE LIKE Filed Jan. 24, 1922 5 Sheets-Sheet 5 \A/ILLIAM' E WILLIAMS,

Patented Get. 1923?.

WILLIA-III EVAN XVILLIAMS, OF HOLYWELL,

WALES.

MOLD FOR CASTING BRAKE BLOCKS AND THE LIKE.

Application filed January 24, 1922.

To all iii/mm it may concern.

e it known that 1,. VVILLIAM Evan VVIL- LIAMS, a subject of the King of Great Brit-- ain v and residing in Holway, Holywell, in the county of F lint, North \Vales, have invented certain new and useful Improvements in Molds for Casting Brake Blocks and the like of which the following is a specification.

This invention relates to molds for casting brake blocks and the like of that type in which the molds are arranged in pairs on a common base-plate. The object of this invention is to improve this type of mold in. respect to certain features hereinafter more fully described.

The invention is. illustrated in the accompanying drawings,- in which Figs. 1 to 10 show the preferred construction.

Figs. 11 to 18. illustrate modifications.

Fig. 1. is an end elevation.

Fig. 1 is an. end view of a detail.

Fig. 2 a. plan.

Fig. 3 is a transverse sectional elevation on theline. 1H, IlEIofFig, 2.

Fig. 3 is. an end view ofa-detail.

Fig. 4a is a plan with the parts above the base omitted.

Fig. 5 is a side view showing the near centre part and the near side part, the cover and bottom turned down.

Figs. 6, 7, and 8 are a rear elevation, a side elevation, and a plan of one end of the movable bottom.

Fig. 9 is a fragmentary view to a larger scale of the lower left hand portion of Fig. 3, and

Fig. 10 is a corresponding end elevation.

in Fig. 1 a spring bow F is shown adapted to hold the parts together laterally to maintain the lids in closed position. In Fig. 3 a pivoted bowF is shown as an alternative. in the other views the spring bow is omitted.

F lg. 11: is an elevation in transverse sect'ion. the base-platei being shown in section.

on the line X1, X1 ofFig. 1'3 and the molding boxes in sectionon the lineXH, XII of Fig. 12".-

Fig. 12 is a bow removed.

plan view with the spring Serial No. 531,434.

Fig. 13 is a plan View the base-plate removed.

Figs. 14-, 15 and 16 are fragmentary views of details.

Fig. lt being a sectional plan.

F ig. 15 is a sectional elevation showing the mold in which the movable bottom is fitted to the base-plate.

Fig. 16 is a sectional elevation through the pouring hole.

ig. 17 is an elevation in transverse section through the left hand mold of a double mold and Fig. 18 is a plan of the left hand portion of the base-plate of a double mold with all parts above the base-plate removed.

Referring first to Figs; 1 to 10.

A is a. base-plate in which (see Fig. l) segmental openings a are formed.

B are the central parts each pivoted to the base by a pin 5 (see Figs. 2 and 5) passing through a lug 6 attached to the part B and through lugs a attached to the base-plate; the parts B are provided with handles 6 by which they can be turned about the pin 6 as shown in Fig. 5. C are the outer part-s, D are the movable. bottoms, and E are the lids or covers. These parts when in the positions shown in Figs. 1, 2, .3, and 4, form the respective parts of the double mold, the molding surfaces being the inner surfaces 0 and Z) of the parts C and B, the under side of the lid E and the upper side of the bottom D, the plane of division of the abutting parts of B and C is shown at :0, Fig. 2; the abutting surfaces may be fitted with dowel pins or other with all parts above aligning means such as pins 5 (see Figs. 2 and 5) fixed to the parts l3 and fitting.

notches 0 formed in the parts C.

The parts are held in position either by a spring bow F the ends f of which grip the faoings c of the outer parts 0, and the under edge of which engages with bosses e on the upper portion of the lids ora hooked bow handle F The movable bottoms D are shown in their closed positions inFig. 3, and are shown in their turned down. positiomby chain-dotted lines, in Fig. 1 and by full lines in Fig. 5; the bottoms D are carried by levers (Z keyed on the spindles d operated by handlescl the spindles d being carried in lugs a formed on the base-plate A; and each bottom D is held in its closed position by a pivoted retaining detent (Z (see Figs. 1 and 2) adapted toengage the handle (Z the detents being pivotally attached to the ends of the rails G which are bolted to the baseplate.

Recesses are formed in the upper surfaces of the bottoms D to take a refractory facing (Z of sand or the like, the recesses being so located that the metal, as it is poured in through the pouring holes. comes into contact with the respective facings (Z instead of with the bare metal which would be burned away, whereas the facings' can be renewed as frequently as may be desired.

The parts C are provided with pivot pins 0 which are connected by connecting rods 0 to a lever a which in the example illustrated is made integral with the shaft 0"", journalled in a recess formed in the base A (see Figs. 9 and 10) and held in place by the bearing cap 0 The bosses of the rods 0 which fit the pins 0 are supported by and run along the top edges of the rails G, the inner top corners of which rails are cut away, as shown, to accommodate the rods in their inner oblique position. When the levers 0* are moved into the position shown by chaindotted lines in Fig. 1, each side part C is moved into the position shown by the chaindotted line, turning about its pin into this position by virtue of the fact that its centre of gravity is below the centre of the pin 0 In the position shown in chain-dotted lines it will be seen. that the moulding surface 0 is turned up into a position in which easy access is obtained to the moulding face 0.

The lids E are pivoted to the side parts pivot pins passing through lugs carried in the respective parts. 6 are the pouring holes, and (Z are pads of refractory material fitted in recesses in the parts D immediately below the pouring holes. Alignment between the upper surface of the bottom D and the upper surface of the base is obtained by forming recessed shoulders d at the ends of the bottoms D as in Figs. t, 6, 7 and 8; the shoulders engage with facings on the under side of the baseplate A.

The castings are pushed away laterally from the moulding face Z) of the inner parts B and any projections and recesses thereon by a pusher-bar H adapted to slide in a transverse recess in the part B, the pusher bar is operated by a lever pin h (see Figs. 2 and 3) having a tonguepiece it which engages with a slot h in the pusher-bar H, the pin k being moved by any suitable form of handle h shown on the left hand side of Fig. 2, but which is omitted in the other views.

Instead of a spring bow F to hold the parts together laterally, and to maintain the lids closed a. pivoted how such as F may be employed having hooked ends 7' fitting over the pins f (see Figs..3 and 4t) and being provided with pressure screws i which enga e with the bosses e (see Fig. lids E. In Fig. 3 the moulding face is shown as recessed to take a brake-block attachment lug J adapted to be secured to the brake block by being cast in situ therein.

The inner parts B are stiffened by a rib Z2 which also serves as a radiating fin.

The action is as follo-ws:-

Assuming that the moulding surfaces have been cleaned, that the necessary facings of refractory material such as (Z have been properly formed and that the parts are in the positions shown in Figs. 1, Q, 3 and l, the metal is poured through the pouring hole a the metal solidifies almost instantly owing to radiation of heat through the metal surfaces, whereupon the bow F or F as the case may be is removed the raising lever c is operated and the side parts withdrawn laterally carrying therewith lids E attached thereto, the handles (Z are then released so that the two bottom parts D turn into the position shown in chain-dotted lines Fig. 1. By suitably tapping the castings it will be found that they usually clear themselves and fall through the openings (1 in the base; should there be any difiiculty in freeing them the lever key 7L is operated and the pusher-bar H moves outwardly and clears the casting. In this way the castings may be removed before there has been time to unduly heat the mold. The mold parts are then turned into the position shown in Fig. 5, and the moulding surfaces are cleaned and the refractory surfaces renewed.

Usually each moulcler has two sets of molds arranged in two rows and metal is poured into the sets alternately, the intervals between the pouring being utilized to give the necessary time for the respective molds to cool. Usually the molds are carried on trestles or the like withthe travelling band below them, the castings falling one to the travelling is released and being conveyed by to the desired destination.

The details of construction may be modified, for example, other means than those shown may be employed to release the bottom parts D and to move the side parts free laterally, and in some cases sufficient space may be left between the inner parts B so that they maybe moved laterally towards each other to free of or in addition to moving the parts C laterally outwardly; the outward movement of the parts C is, of course, necessary when attachment lugs such as J are fitted tothe brake-blocks.

the bands the castings instead 2) on the band when the bottom Referring now to Figs. ll to 16,

A is the base-plate, B the central parts of the double mold which parts are hinged at one end to the base-plate, C are the outer sides of the mold and carry the hinged lids E F is the spring bow and J is the brake-block attachment lug which is cast in situ. All these parts with the exception of the base-plate A are substantially similar to the corresponding parts described in reference to Figs. 1 to 10; in the present modification, however, the mechanism for moving the side parts (1 is omitted, the moulder withdrawing these parts laterally by hand.

In this modification as in the modification first described the bottoms D of the molds are made separate and detachable from the base-plate A This is accomplished according to this modification by forming recesses K in the base-plate, into which recesses the bottoms D fit. Preferably the bottoms have corner lugs D which fit the corners of the recesses l; (as shown in Fig. 1d) leaving an air space 70 round the sides of the bottom, and the under sides of the bottoms are recessed as at 7: (Fig. 11) or the same result may be obtained by forming recesses 70 in the base-plate (as shown in Fig. By forming these recesses round and under the bottom, the mold is kept much cooler than would otherwise be the case. The bottoms are held in place by bolts The pouring holes a of the lids E are lined with refractory material 6 and in order to prevent the burning away of the bottoms D recesses (Z are formed in their upper faces opposite the pouring holes. These recesses are filled with plumbago or the like refractory ma terial 03 The central parts B are made separately movable about their hinges a and the two parts are separated by an air gap, the access of the air to the bottom, sides and tops of the mold serve to keep the mold cool.

Referring now to Figs. 17 and 18,these figures show a modification in the mold necessary when the brake-blocks to be cast require to have a cored hole, or holes to carry the brake-supporting gear.

From an inspection of the mold it will be seen that there is a lateral extension or car formed on the brake-block in which extension a large central and twosmall holes are required, these holes are formed by cores such as M which cores are supported in stepped holes (Z and d, the bottom of the core fits in d and al forms an annular recess into which sand may be rammed around the core to prevent the production of fins.

Similar but smaller cores are fitted in the holes 6 In Figs. 17 and 18, the construction of a double mold is substantially similar to that described, A being the base plate, C the outer side part or one mold, B the inner side part of one mold, E? the lid, and D the replaceable bottom of the mold.

Having now fully described my invention,

I declare that what I claim and desire to secure by Letters Patent is 1. In a mold, in combination; a bed plate, mold side parts carried from the upper side of the bed plate, a mold cover hinged to one of the side parts, means for holding the side parts and the lid in working position, and a mold bottom separate from the bed plate and adapted to make joint with the side parts oi the mold; substantially as describec 2. In a mold, in combination; a bed plate, mold side parts carried from the upper side of the bed plate, a mold cover hinged to one of the side parts, means for holding the side parts and the lid in working position, the bed plate being cut away so as to expose the inner edges of the under faces of the side parts'and a mold bottom the edges of the upper face of which are adapted to make joint with the said edges of the side parts; substantially as described.

3. In a mold, in combination; a bed plate, mold side parts carried from the upper side of the bed plate, a mold cover hinged to one of the side parts, means for holding the side parts and the lid in working position, the mold bottom having an opening through which the castings when released may pass, a movable bottom hinged to the bed plate and adapted in its working position to make joint with the mold side parts and adapted when a casting has to be released, to be moved about its hinge clear of said opening; substantially as described.

4, In a mold, in combination; a bed plate, mold side parts carried from the upper side of the bed plate, a mold cover hinged to one of the side parts, means for holding the side parts and the lid in working position, said bed plate having an opening, the sides oi: which are overlapped by the end surfaces of the side parts of the mold; a mold bottom hinged to the bed plate the upper face of which is adapted in its working position to be held in contact with the said end faces of the mold side parts, said bottom being also adapted to be turned about its hinge so as to be clear of the said openings; substantially as described.

In a mold, in combination; a bed plate mold side parts carried from the upper side of the bed plate, a mold cover hinged to one of the side parts, means for holding the side parts and the lid in working position, the

mold bottom having an opening through which the castings when released may pass, a movable bottom carried from an arm by a spindle journalled in the bed plate; an operating lever from said spindle and means adapted to engagethe operating lever and to hold a movable bottom 1n its Working position; substantially as described. a

pusher bar housed in an opening in one of the mold sides and adapted \vhennioved axi ally to detach the casting from the mold face of the said side; and means for operating the said pusher bar; substantially as described.

7. In mold, in combination; a bed plate, mold side parts carried from the upper side of the bed plate, a mold cover hinged to one of the side-parts, means for holding the side parts and the lid in working position, a mold bottom having an opening through which the castings When released may pass, a pusher bar consisting of a horizontal bar movable in a horizontal recess, said bar being slotted to take a tongue piece mounted on a vertical pin adapted to be operated by a handle; substantially-as described.

8. In a double mold, in-icombination'; a bed plate, inner and outer side parts carried from the bed plate, the outer side parts being laterally movable relatively to said inner parts, and said bed platehaving an opening through Which the released castings may pass; means for moving said outer side parts laterally; a movable bottom carried from said bedplate, means for operating the movable bottom and means for holding said -bottom in its working position; and a spring bOW adapted to hold the side parts together and to hold the lids closed; substantially as described.

In \vltness whereof i set my hand in pressenoe of Witnesses.

WILLIAM EVAll lVlLLIAMS.

lVitnesseIs JosnrH E. Hins'r, Manonnm m Jon ns. 

